5244998861 has 2 divisors, whose sum is σ = 5244998862. Its totient is φ = 5244998860.

The previous prime is 5244998851. The next prime is 5244998897. The reversal of 5244998861 is 1688994425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5167453225 + 77545636 = 71885^2 + 8806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5244998861 is a prime.

It is a super-3 number, since 3×5244998861³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5244998797 and 5244998806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5244998851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2622499430 + 2622499431.

It is an arithmetic number, because the mean of its divisors is an integer number (2622499431).

Almost surely, 2^5244998861 is an apocalyptic number.

It is an amenable number.

5244998861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5244998861 is an equidigital number, since it uses as much as digits as its factorization.

5244998861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 56.

The square root of 5244998861 is about 72422.3643704070. The cubic root of 5244998861 is about 1737.4612711620.

The spelling of 5244998861 in words is "five billion, two hundred forty-four million, nine hundred ninety-eight thousand, eight hundred sixty-one".